@article{05687023,
title = {Congruence classes of orientable 2-cell embeddings of bouquets of circles and dipoles.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {17},
year = {2010},
zbl = {1215.05041},
language = {en},
url = {http://dml.mathdoc.fr/item/05687023}
}
Feng, Yan-Quan; Kwak, Jin-Ho; Zhou, Jin-Xin. Congruence classes of orientable 2-cell embeddings of bouquets of circles and dipoles.. The Electronic Journal of Combinatorics [electronic only], Tome 17 (2010) . http://gdmltest.u-ga.fr/item/05687023/